Review: Spank's Foam-Filled Spike 350 Vibrocore Wheelset

May 22, 2019
by Mike Levy  
SPIKE 350 VIBROCORE WHEELSET Spank Spike 350 Vibrocore wheelset

We're a fickle bunch these days, with news of so-and-so's fresh carbon rim not causing the hubbub it once did. We get it; it's light and black and carbon and expensive and probably not worth the price when you really think about it. And when it comes to aluminum rims... I've got a freshly painted wall that I need to watch dry, thank you very much.

But Spank Industries - who've always shunned carbon fiber - are doing some genuinely interesting things with their aluminum rims, especially the part where they fill them with green foam that hardens up. More interesting than you thought, right? Yeah, these aren't your run of the mill alloy hoops.

Spike 350 Vibrocore Wheelset

• Intended use: trail / all-mountain / enduro
• Diameter: 27.5'' or 29'' (tested)
• Rim width: 30.5mm (inner)
• Vibrocore foam-filled rim cavity
• Hub Compatibility: All of 'em
• Tape and valve included
• Weight: 2,078-grams (29'')
• MSRP: $699 USD
• More info:
The green foam is the Vibrocore in Spank's Spike 350 Vibrocore wheelset and the claim is that it's there to help with vibration damping. The $699 USD, 2,078-gram wheelset is made for everything from trail riding to downhill use, and you can get 'em in both 27.5'' and 29'' sizes.

SPIKE 350 VIBROCORE WHEELSET Spank Spike 350 Vibrocore wheelset
With a low height and thinner walls, the 350 Vibrocore rim is said to offer more vertical compliance.


You don't need to be a marketing scientist to know that having a long list of features is gonna help you sell whatever it is you're hoping people buy. Truth is, however, that a lot of those cleverly named features don't really add up to much more than that, just another bullet point in the catalog.

But whether it works as claimed or not, Spank's Vibrocore foam-filled rim design is more than just a bullet point. In fact, it might be the most interesting thing to happen to aluminum hoops since someone figured out how to design them with more than a single wall.

SPIKE 350 VIBROCORE WHEELSET Spank Spike 350 Vibrocore wheelset
The foam goes in soft but then hardens up as it dries.

Here's the claim. First, we're supposed to stop calling it 'just' foam. It's a ''Proprietary, biodegradable, complex foam core of precisely controlled density,'' and Spank says that it ''Reduces vibrations or ‘noise’. The low density, pressurized core performs a similar function to the soft tissue inside bones, increasing inner wall strength and absorbing vibrations.'' This, along with the rim's relatively low height, is supposed to make for a wheel that's able to damp certain types of vibrations better than a traditional design.

The Vibrocored Oozy 350 rim comes in at a still respectable 545-grams in the 29'' size, or just 40-grams more than the standard Oozy hoop. Foam doesn't weight much. It also adds about $30 USD to the cost, with the stuffed 350 going for $129 USD on its own.

Spank's been doing some clever things with aluminum, and in their own factory, for many years now. One of them is the 'W' cross-section to the rim that's said to increase strength over the traditional 'U' shape; think corrugated sheets of aluminum and you'll get the idea.
SPIKE 350 VIBROCORE WHEELSET Spank Spike 350 Vibrocore wheelset
Who said alloy rims aren't interesting?

The other neat bit worth pointing out are the three rows of 0.2mm tall ridges that run the length of the rim's sidewall and bed - you can spot them in the photo below. You've probably already figured out what's going on: More friction between these ridges and the tire's bead should mean fewer burps. Spank says that it helps to do that for both tubed and tubeless setups, too.

SPIKE 350 VIBROCORE WHEELSET Spank Spike 350 Vibrocore wheelset
Spot those ridges on the rim's sidewall? They're supposed to help keep the tire from burping or unseating entirely.

The rest of the Spike 350 Vibrocore wheelset is pretty straightforward. There are 32 triple butted, J-bend spokes laced three-cross (and 32 brass nipples) to a set of nice looking hubs that turn on sealed bearings. You can choose between XD or a normal freehub, and inside there's a conventional three-pawl, steel drive-ring setup that you get at by using a 17mm cone wrench on one side and the handle of another wrench into the axle slots on the other.

Spank has done their customers a solid by not just making sure the hubs can fit everything from quick-release 100/135mm to all the different thru-axle options, but they've also laser etched each designation onto the caps. I have a drawer full of hub parts that I'll probably never use because I don't have the slightest clue what they fit, so I like this simple detail.

SPIKE 350 VIBROCORE WHEELSET Spank Spike 350 Vibrocore wheelset
SPIKE 350 VIBROCORE WHEELSET Spank Spike 350 Vibrocore wheelset
The hubs are straightforward, and the interchangeable endcaps are laser etched so you'll always know what axle size they fit.


So, does this green stuff actually make a difference or is it just there for the bullet points? The 350 Vibrocore wheels were bolted onto a Trek Slash owned by someone who goes through alloy rims quicker than I go through tires, which is absurd. Yeah, Squamish, BC, isn't easy on bike gear. Reliability and feel are the questions here, though, so it's an ideal location.

The Vibrocore guts don't make this rim indestructible, but they did brush off the kind of abuse that claimed a handful of other rims over prior months. Giant dents, flat spots, and cracks took out the others, but the 350s lasted longer than any other wheel, especially the one on the back of the bike. Not only did the rear wheel stay relatively true, the rim's sidewalls didn't fold over like cardboard when it was smashed into the backside of a rock. That's a win in my books.

It wasn't all smooth sailing, though, with the rear wheel needing a re-tensioning after just three rides and then some more love required four weeks down the road. That said, the rim was still straight and dent-free, but the build definitely required a few spins of the spoke wrench to bring the tension back up. Keep in mind that it'd be around this time that any other aluminum rim that's been on the back of this bike would go into the bin, but the 350 hoops kept on trucking.

It's also worth noting that there were less burping incidents compared to other alloy rims, be it through a hard corner or a sideways landing, so maybe there's something to Spank's funky ribbed sidewalls. I always like it when my tire doesn't come off mid-ride.

SPIKE 350 VIBROCORE WHEELSET Spank Spike 350 Vibrocore wheelset
The 350s stood up to some serious abuse, lasting longer than any other aluminum rim that one particular test rider has ever used.

Feel is the other talking point, with Spank saying that the design offers a degree of radial compliance, presumably more than your average carbon rim. This one's a bit more ambiguous, however, and especially when they're attached to a supple, active enduro race bike. One bit of feedback that does stand out is that they felt a bit "dead," for lack of a better term, which could be the foam core doing what it's supposed to be doing. Either way, they were much more reliable than other wheels that have seen the same abuse.

The hubs proved to be trouble-free as well, and while they eventually needed some love, aka a re-tensioning, the 350s were more reliable than any other wheelset that's called that Slash home.

Pinkbike's Take:
bigquotesSpank's Spike 350 Vibrocore wheels proved to be more reliable than other alloy wheels that we've had on the same bike being ridden down the same trails, and that's enough for me to say that there are some benefits to these foam-filled hoops, especially given that the 40-gram penalty is pretty minimal.  Mike Levy

Author Info:
mikelevy avatar

Member since Oct 18, 2005
2,032 articles

  • 177 19
 Does filling an aluminum rim with foam make a significant difference out on the trail?
Short answer: No
Long answer: Nooooooooooooooooooooooo
  • 165 1
 but but, with this rims you no longer drop nippels into the rim body while building a wheel.
  • 12 101
flag thedirtyburritto (May 22, 2019 at 2:16) (Below Threshold)
 @K1maxX: You can also accomplish this complex feat by being careful and using the proper tools, but hey, whatever works.
  • 92 1
 I feel the important question here has yet to be asked regarding real-world usage:
Does this foam make old trashed rims useless as a track-side noise maker for race days?
  • 44 8
 I have a great idea to reduce wheel trail chatter. Its a ruberized tube coating full of, get this, air, that will absorb all the bumps on the trail. It has variable density so you can adjust it according to your needs, soft or firm.
What do you think?
  • 9 2
 @oscartheballer: but will this rubber coating be strong and stable enough to deal with pointy and rocky surfaces? I'm thinking about adding another layer of rubber but this time the focus is more on stability and tracktion.
  • 10 1
 @Mas2 To be fair, they didn't do a comparison with the same rim without Vibrocore foam, so you can't say that. It's not entirely clear from this review that a 1:1 rim option exists either. Is the normal Oozy that is mentioned the same exact rim just without Vibrocore? That would be a comparison test to run.
  • 24 4
 Ride em before you bash em...its not a gimmick

Short answer: Yes

Just like their Vibrocore bars - kick ass over carbon, do they make a difference: YES
**I ditched my Renthal setup for Vibrocore and they are waaaaay better
  • 7 1
 I'd say not blowing up wheels as often as you normally do is a significant difference, but there are people out there who've never destroyed a strong, well-built wheel, and there are other people who go through 1 a month or more.
  • 5 0

I rode on vibrocore bars for several months and couldn't tell a damn thing
  • 4 0
 @stormrider99: I ran vibracore bars on a rigid bike, and some RF carbon bars on the same bike.

I couldn't tell any difference.
  • 3 1
 how about after a year of having water trapped in the foam how strong are they gonna be then?
  • 1 0
 @stormrider99: I have Chromag carbon and just bought a used bike that's coming with vibracore. What did you notice between carbon and vibracore?
  • 1 0
 @stormrider99: I also changed from Renthal to Vibrocore bars, now I am running these on both my mountain bikes
  • 2 0
 @mnorris122: i was putting rims out of true every 2 months, then i found a different builder to true them up and my rims have been perfectly true for a good 9 months
  • 108 1
 "performs a similar function to the soft tissue inside bones" --- Lol, The primary function of the "soft tissue inside bones" (i.e. bone marrow) is to produce red and white blood cells, and platelets.....not, whatever the hell these marketing geniuses are thinking it does.
  • 18 2
 Oh you dont put your bone marrow in your bike parts? Its the new things. Ghetto tubeless, now ghetto Vibrocore.
  • 35 0
 @chillrider199: My bone marrow is hella vertically compliant
  • 19 0
 Conversely, I've sold bone marrow to get bike parts
  • 24 0
 So if I am reading this correctly, these new rims will produce red and white blood cells, and platelets?

Will UCI be testing for this and if so then how do would one explain I have more than normal red blood cells due to my rims and not EPO?

Suggestion if the answer to the first question is a Yes: Could they brand these as Spank Armstrong?
  • 4 1
 There is a "spongy oam" inside of bones that increases its strength...its not the marrow.
  • 2 0
 @clink83: yes bones are a composite, hard shell with flexible inner wall, functional stiff going on internally too of course
  • 1 1

Cannon upvote u enough
  • 66 1
 I want to see a maximum vibration damped bike. These wheels, cushcore, flexx fasst bars, rev grips, the squishy headset spacers, vibrocore bars, vibrocore frame, and those little magic ion stickers as the cherry on top
  • 3 0
 i am working on it -wheels, nukeproof ard, spank vibrocore bar, formula selva with neopos -not going any further i think, i hate flexing /rocking grips.
  • 3 0
 Sounds like something the top gear, or grand tour, of bikes would make.
  • 12 0
 You forgot a proflex stem.....
  • 3 0
 you mean vibrocore filled steel frame right?
  • 12 1
 And a steel frame. Much of the noise from a bike comes from big carbon and ally tubes acting as resonance boxes. Steel bikes (especially Starlings!!!) are silent.
  • 3 3
 the flexx bars are NOT worth the money.
  • 8 0
 @rideitall-bmx-dh-road-unicycle: I'm sorry for your loss
  • 2 0
 Add a push 116 and more ribbon coil to the list as well as cushions core front and rear
  • 2 0
 @phutphutend: I hate the sound of brake or shifter cables hitting a carbon frame on rough trails...ahhh!
  • 1 0

No; plastic fantastic
  • 1 0
 @butters1996: yes - for mtb & moto. They have a little more application to reduce vibration from engine in moto - but on bike it makes the bars feel loose and floppy even with the stiffest disc in
  • 2 0
 Just drop your tire pressure by 3psi.
  • 50 1
 Vibrocore sounds like something my gf would use on her hoop.
  • 3 0
 May I ask what "hoop" means? I think I have a good idea, but maybe I'm just a pervert and a hoop is a toothbrush?
  • 4 0
 Does the full name, ‘furry hoop’, help?
  • 1 0
 @Richt2000: LOL!
  • 29 0
 Credit where it is due - their handlebars I noticed less buzz versus even a top end carbon bar. It does seem they have produced a super reliable pair of wheels and for that alone they are probably worth a purchase.
  • 4 1
 you notice it the most at the end of the day. Your hands will still get toast in the bike park but it takes 15 runs instead of 10 to get there. Been on Vibracores since 2015, and they are worth it.
  • 2 0
 @SnowshoeRider4Life: it's those Western territory runs. A few of those will even give Thor arm pump.
  • 4 0
 I can’t help but wonder if spraying some of that Home Depot expanding foam in a set of bars would basically accomplish the same thing. How important is the density of the foam vs the foam just being present...
  • 3 2
 I just got a set to replace my Santa Cruz carbon bars as my hands go dead on even a short downhill with them - noticed the difference immediately and then got my hardtail with Nukeproof alloy 35mm clamp bars and they are worse than the SC Carbon for dead hands. Will either get the One Up bars to replace them or another set of Vibrocore
  • 1 0
 @oldtech: i think the ultimate arm pump test is MCBP. snowshoe doesn't wreck my hands like creek can
  • 14 0
 I use these wheels on my trail bike and have had more cases than Chris Brown's legal team. Previously I ran DT FR570's with hope pro4's, these rims are tougher and lighter but the hub engagement definitely isn't as refined as what you get on higher end hubs like hope, I9, etc. For the price you are getting a great wheel set.
  • 1 0
 I put a set of i9 hydra hubs on these Vibrocore wheels and love it
  • 13 1
 Next step is to balance and reduce vibration on wheelset as for car wheels

Jokes off - i have an spank spike 800 vibrocore handlebar on my dh bike, and it feels better than any other alloy handlebar
So i think v-core wheelset should be felt well to

/sorry for my english
  • 3 1
 agreed, wheel balance has got to come up at some point.
  • 10 0
 I've run spank wheels for years now. Spoons, spikes, vibecore... Etc. Great product with zero issues (knock of wood). Would recommend to a friend!
  • 16 7
 To summarise in one sentence; A good solid alloy rim - but the foam does nothing.
  • 14 2
 Funny that if I were to summarize this article, it would be: the foam adds minimal cost and weight to the wheel and seems to add strength and reliability that makes it well worth it.
  • 1 7
flag bigburd (May 23, 2019 at 7:31) (Below Threshold)
 The foam does nothing to make the rim stronger, be serious now for fuck sake.
  • 1 0
 @bigburd: Levy seems to think otherwise. All I know about them is that they are specc'd on quite a few mid tier DH bikes.
  • 1 0
 @bigburd: if the foam is like in the handle bars it's actually very dense. It's similar to the foam/plastic wine bottle corks. It could add some structural support.
I agree the actual rim design is the main contributor of strength, but I was surprised how dense it was.
  • 10 1
 If I put these on a Karate Monkey frame will people say I spanked my monkey...?
  • 5 0
 I know this new technology sounds silly af but addidas new ultra boost technology is just that.. foam and it’s comfy as hell. I actually think this makes a lot of sense even tho in my example one thing has not much to do w the other.
  • 6 0
 I'm surprised....."funky ribbed sidewalls. I always like it when my tire doesn't come off mid-ride" didn't get a single mention? Clearly the writer was trying to work a bit blue as they used to say...
  • 6 0
 "Spank Foam-Filled Spike 350 Vibrocore" is this a bike product or adult entertainment product? Is Ron Jeremy on the product development staff?
  • 4 1
 I've been using the Vibrocore bars for a couple of years with notable results. The numbness that set in after about 2 hours of riding became 3 hours. When my stock rear rim on the Giant Trance flat spotted, I decided to try the Oozy Vibrocore rims. Like PB, I had to re-true the rims due to a couple of spaghetti-spokes, then again about a month later as a safety check. Otherwise, no more tire farts, and the rock pings aren't as noticeable. I'll be changing from Huck Norris to Cushcore soon, and I expect this combo will be about as bombproof as this American-sized old rider can expect. I've already seen copycat corrugated rims being advertised, and it won't be too long before the foam-filled rim will be a norm.
  • 3 0
 I've got the same set up, vibrocore rims with cushcore. You can run tires at 20psi with no burping or squirming and still blaze a rock garden without worrying about your rim. I think it does help with vibrations from roots or small braking bumps too
  • 3 1
 I gotta say I used to be super against cushcore, but then I listened to a podcast about it and gave it a shot. Holy shit is it a game changer, I've never felt more confident in the grip of my tires, and the ability to charge rock gardens is pretty amazing.
  • 3 0
 I've got a set of these rims built up in my DH bike, running Cush Core too. Had a nasty rock strike at Mountain Creek (big surprise!) on Saturday, rim is fine. Last year a similar rock strike killed my mtx33 rim. Good enough for me!

Another benefit of the bead bite and Cush Core combo is my DHF 2.5 DH wire bead tires sealed up tubeless with minimal hassle.

Seems like I've got a lighter and more reliable setup than the last two park seasons. Sweet!
  • 3 0
 I've had a set for about a year at this point. I choose to smash rather than finesse a lot of lines, and haven't dented a rim yet. No inserts, but also not running super low pressure. I'm also using i9 torch hubs and e13 dh hubs, so I can't say anything about Spank's hubs. I'm happy with the quality thus far
  • 4 1
 I have drunk the Spank branded Kool Aid. And I continue to partake...the Oozy rims on my two bikes have been great. Neither are Vibrocore but I would certainly consider using one (especially out the front) given how solid the basic platform has been...

My only caveat...setting them up tubeless without using the Spank Fratelli tape is a bastard. That W profile means the tape has to be very flexible across its width to properly adhere to the rim and maintain a seal.
  • 3 0
 I've been running these wheels for a year now. This review would have been much better with a comparison against the non-Vibrocore 350.

There's a definite difference in feel vs my prior Stans Mk III. Feel better in rock gardens but kinda dead on flow trails. My 2016 Schawlbes did not mount, but DHF/DHR went on easy and held air without sealant (for a few days, anyway). Inflated with a regular pump. Spank has a great reputation in dirt jumping. Spoon 32 is indestructible and I've seen DJs with Race 28s on them as well (though I hear they do fail as rear wheels).

One other note. Since they're a bit more forgiving, lately I've been running higher pressure on flow trails to reduce rolling resistance. End up with a DJ like feel on a trail bike. Fun times!

Oh and I bought into the Vibrocore bar Koolaid back in 2016. Found a set for half off and decided to give it a go. On a 170/160mm bike, hmm, I dunno, but on my 140/125 they're appreciated. They're not all that much more expensive than other alloy bars and they're way cheaper than carbon, and they come in garish bright colors, so now they're on all my bikes.
  • 2 0
 The spiel for Vibrocore bars is that trail chatter is in the frequency range for HAVS or Vibration White Finger, especially for the 35mm standard, and the (sic) foam is supposed to dampen the flex of the bars. I don't see wheels having that much vertical compliance for the vibrocore to be particularly effective if it works as intended (that's what tyres are for).
It supposed to work on the pringle-ing type deformation, like damping a cymbal ring? I thought that's where rim stiffness was meant to be king, and spoke tension isolating the buzz from the bike?
  • 5 1
 Vibrocore bars rule. I am old and banged on and into damping wherever it comes. This stuff should be perfect for hardtails and gravel bikes.
  • 4 1
 Agreed, I had the vibrocore bars as a trial to help with vibration damping since my forestry days almost gave me Whitefinger and on normal bars my fingers would go numb in no time at all. I can honestly say they do the job and I've not looked back. A while new lease of life for my hands.
  • 5 0
 @landscapeben: I feel like these rims should have been tested on a hardtail.
  • 1 1
 @JesseE: defo! Would have been a clearer test methinks.
  • 1 0
 "Spank's Spike 350 Vibrocore wheels proved to be more reliable than other alloy wheels that we've had on the same bike being ridden down the same trails, and that's enough for me to say that there are some benefits to these foam-filled hoops, especially given that the 40-gram penalty is pretty minimal. "

When you say that Mike, is this also compared against the standard non foam filled spank rim?
  • 4 3
 There obviously needs to be a systems solution.

I propose a Crunchocore filling (you know the Crunchie candy bar).

Combine this with Barelli's Baguette Insert and voila ....
Vibration damping, tire stability and instant solution to epic ride bonk all in one.

Great for the planet too !
  • 2 0
 I'm on season two with my Oozy rims riding Whistler park and valley trails, and they're still rock solid. Added bonus: Spank sponsors a bunch of stuff around Whistler including Crankworx, so it's nice to support them.
  • 4 0
 Price, strength and style factored in, I think Spank make the best rims on the market.
  • 1 0
 Love my spank Oozys, though the grippy bead seat does eat beads if you make a habit of taking the tyre off. No doubt that the shape of the Oozy does what it is supposed to do, its wide, and tough as old boots. All I asked for. I have my doubts about vibrocore though
  • 2 0
 Buy a can of construction expanding foam for around window and door frames and do it yourself. Don't put too much in, because it expands like crazy. Works great in handlebars, too.
  • 1 0
 I have been through 2 pairs of rims in the last month I want to purchase a good pair of reliable rims for downhill racing, but I dont know if I can trust the reviews anyone out there that can recommend a good rim and cheap if possible haha. thanks Smile
  • 1 0
 I can not speak highly enough about Spank products. As a 220+lb rider who loves Enduro, Spank products can really handle the abuse I give them. I've had the same rims for 4 years now, flatted once mid race run and rode it out, they still are straight!!!! After going through 4 pairs of pedals this past season, I just bought a pair of Spanks and they have handled everything I through at them.

  • 1 1
 I love the Vibrocore hoops on my Supreme. I had a set of Spank Spike 35's before so I had a good comparison (though it is the version that had the box section). On tech dh, these hoops are super sturdy feeling and give a more damp ride than my old spank spike wheelset on high-speed chatter. I put about 50 days of dh at Killington with them, so they're definitely tough. I do find that when I ride flow trails the bike feels a lot less lively, though. I also find you need to pay extra attention to spoke tension before each ride. I have to tighten spokes about every other day depending how hard the rides have been. If I didn't like my Chromag bars so much I would definitely gove the Vibrocore bars a try, too.
  • 1 1
 I have a set of these wheels on my (get ready haters) e-bike, they are noticeably different in feel to the DT Swiss M1700s that I had set up with the same tyres. Less trail buzz is sent up through the bike and I haven't burped a tyre or lost sealant with them, which did occur frequently on the rear DT Swiss wheel. Not saying they are the best wheels out there but I definitely rate them so far.
  • 1 1
 Why doesn't someone take this type of claimed beneficial feature and put it through some real world unbiased scientific testing? Then you can cut through all the crap and say here's the vibration damping performance of rim A,B,C etc.

I think PB should do some proper testing of this nature on claimed beneficial features of anything! But then again who will want them to test their product to find out it's all a load of rubbish.
  • 5 3
 Is this a proven Enduro-Foam?
Most relevant for me, may i get it in blue? I don’t like green
  • 1 1
 The bars work in my opinion, fractionally but they do. But wheel wise, would you not be better to cover the outside of the rime with 2.5" of a softcompund rubber pneumatically supported..........oh a DH tyr might do it!!
  • 2 1
 We’d used to fill our tyres with grass, which helped with “vibrations”... was mostly after punctures, but still its nice to be ahead of the game .
  • 2 0
 If those rims were brown, I'd buy them and eat them, they would look like a mint aero!
  • 1 0
 Vibercore has been proven by that national bull sheet agency to produce 15% better gains than Viagra at a cost reduction of 33%.
  • 1 0
 Been using Spank Oozy rims since 2013 . Never had a failure , current set are 29" 395,s with a 2 cross lace , Roughly 700km of abuse on them , still round and true.
  • 1 2
 Sorry guys, when I see poor marketing bullshit like this with zero quantified results or any engineering behind it, you loose total credibility of your products quality and I feel embarrassed for anyone who chooses to ride your products.
  • 11 0
 If you are technically savvy and understand testing methods you can read this white paper
  • 2 1
 Ally 29er rims are pretty radial compliant by nature. If it was carbon, that would be a selling point.
  • 6 7
 You have missed first 33mm wide light bicycle rims then. They were stiff as fhoooock even in 29". if you supported yourself on them they wouln't give a micrometer.
  • 5 1
 @WAKIdesigns: Ha, funny you should say that. I've just ditched my LB 30 internal carbon rims after 3 years for some Spank Race 33's. Way better ride and track over rough ground better.

Wish I'd done that years ago.
  • 2 0
 @mikeep: i have the 29 version (with cushcore) and they are by far the best rims i ever had. Not too stiff in 29 and tough as nails. I have been riding them for 6 years now and raced enduro with a downcountrybike and too thin tires -not a single crack or dent (if this is even possible), also i have not trued them once. On my new bike i have flow mk3 rims and dented them quite badly on my hometrails with DD tires. lets see how the spank wheelset holds up.
  • 6 6
 @optimumnotmaximum: I don’t mind a dent or two in my EX471. The difference in compliance when going from LB AM33 to EX471 was night and day. Pliers and sandpaper work wonders. What I do mind though is how 4 year old carbon rims I have at the attic look like, that is plenty of delamination and crushed fibers along the bead wall where they hit the rocks. I’ve seen the same at workshops around town. Not a single dent that is true. In case of a sealant leak into the rim? Oh boy, I hope you don’t have alloy nipples, even though brass will undergo galvanic corrosion as well. It just takes more time. Alloy nipples in a carbon rim that had contact with sealant pulverize. Anodizing does not help much since raw alloy will be exposed during wheel building process
  • 1 0
 @WAKIdesigns: not a single problem, maybe becuase of cushcore and brass nipples.
  • 3 6
 @optimumnotmaximum: cushcore indeed may have saved carbon rim business outside road and XC. Without it they would be phased out by pros opting for alu. I think they still do. I a m a procore guy though and would not trust a carbon rim to handle 60-70PSI
  • 3 1
 Getting out my can of Great Stuff right now !
  • 1 0
 Get the insect repellent version of it to help keep tarantulas away during migration season.
  • 2 0
 i can’t see any photos.
  • 1 0
 Me either
  • 3 0
 me either. The site has been fubared for me all morning
  • 1 0
 @tbell1979: photos are back, all seems fixed now
  • 2 0
 ACS Z-rims anyone? All the compliance!
  • 1 0
 Wait... they said they help keep tubed setups from burping? I must have misread that.
  • 1 0
 Does Spank claim the foam makes the wheels more durable, or is that just how it turned out?
  • 1 0
 sadly, i have don't have that budget ..... dyou think shoving a couple sponges in there 'll do the trick ??
  • 2 0
 When they decide to fill the rims with IPA, I'll get one
  • 2 0
 Shoulda filled them with helium instead to make the bike lighter!
  • 3 2
 How many POE does the Spike hub have out of curiosity?
  • 1 0
 I could really do with more vertical compliance!????
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 I'll stick with tennis racket vibration dampeners. Thanks.
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 Spokes got loose after 3 rides... How does Spank develop a product, market it, send samples to Pb, yet not make the effort to tension the spokes and add a drop of spoke freeze or mild permatex.
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 Why would you want to add more weight to wheels? Especially at the rim
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 „Longer than any other wheelset” means how much actually? 1 day? 2 months?
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 I have 345 rims with spank hubs. Indestructible. A touch heavy but well worth it. They stay true and have zero dings in it. You can do tubeless with pump easily thanks to shape of rim. Only true pain is setting tubeless valve to seat properly so it doesn't leak. I will definetly buy another when Ill buy new bike. I can't recomend them enough.
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 @dumr666: I did destroy spank rims with Procore together. Don't know why I should trust them now.
NEWMEN EG 30 everyday ..
Just cracked a Carbon rim two days after I get them. Back to NEWMEN....
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 I have Spoon 32 rims on my DJ and they are super strong. At one occasion in the skate park the spokes got loose (I am a shtty wheel builder) to the point where they were making sounds. I didn’t have a spoke key with me so couldn’t tension them. Kept riding, cased the crap out of copings on quarters, landed to flat from spine a few times (I am worthless in skate park) and the rim stayed quite true. Came home, retensioned the wheel - rim got back to perfectly straight shape with no problems. Rode them in the woods too, landed hard on rocks, all with tyre pressure at 60PSI. No issues. Best locals use them on their DJs and they torture those wheels, only one failure, by the best local ripper. He sends tripple tailwhips, 360s, flares and what not. I am now building a DH wheelset for trashing and Spank is my primary choice.
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 I have used a ton of spank stuff. It's really good. The Vibrocore bar is excellent - I've had three now and will get another for my new bike this year.
Race 33 rims are strong as fook too. My Nomad fell off the back of my car at 110km/h on the freeway. Front wheel was undamaged. Rear wheel was about 3mm out of true. Vibrocore bar was straight which was unbelievable. I replaced it anyway. The stem took a beating though. One of the Spike pedals got a rough bearing after that.
I cannot recommend Spank stuff highly enough.
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 @WAKIdesigns: I could not destroy mines either, even with a flat rear DH tire, no insert, may be the 26 inches saved me hahaha. Anyways, for all around bike, these 350 look good, but I'd try something 200-300g lighter.. then I can put decent tires and may be the cushcore crowd will convince me to put one on the back someday... I dont mind an alloy 8-9lb frame but I cannot get fitter, lost cause, I need lighter shit to move in circles...
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 WAKI, with much respect, did you just write that you run 60 PSI in your tires. I love your posts, mostly. You're entertaining usually and you've taught me a lot. 60 PSI is totally wrong and might explain why you're often so cranky
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 Unless, as I see now you just happen to run your skate park bike in the woods? That's pretty cool. 60 PSI for a mountain bike tire would be total Joey.
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 @Lugers: yes I run 60psi in the tyres of my DJ if I ride it in the woods. I expect no less than respect for that. Because that is real hardtail riding. Single speed, short and steep bike, little travel, hard semi slicks. Genuine primal chaos. Not some pretentious bullcrap with giant fork. Then I get on my fully with 26/28psi in my Minions and appreciate every single bit of it.
  • 1 4
 When Vibrocore stickers will be available? Did they finally made the rims a bit more resistant? I´ve probably haven´t seen a rim in this price range which dents so easily as Spank rims. EX 471 for life
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 @mikelevy wow your really spanking it with this review
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 Low profile to add some radial compliance, W-shaped cross-section to stiffen it up, wait.. What?
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 Rim deforms in all directions, vertically (low profile helps there), laterally (you want lots of stiffness there) and it’s section twists. That is why alloy rims are naturally more compliant than carbon. It is not that hard to build a vertically compliant carbon rim but it is virtually rigid laterally and won’t twist.

But Spanks W-shape is simply a selling point. Merida did the same with their frames back in the days. The foam is there to supposedly dampen vibrations which is impossible to determine. Many people were claiming that first carbon rims and bars were more compliant than alloy which was pure horse shit caused by post purchase rationalization. Those spanks may be quiter though. When you run no insert and super thin tyres on rocky terrain it may be a nice feature to have
  • 1 0
 @WAKIdesigns: Dampening effects are not impossible to determine. Do I expect to see an independent test, ever? No, but are they unquantifiable? Absolutely not. A more relevant question is whether or not the difference, of any, is perceptible.
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 The cross sectional shape's benefit in the Spank rims is very easy to demonstrate. It increases the second moment of area of the cross section, thus making them stiffer without adding material.

Imagine bending a ruler flat and then upright... which is stiffer?
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 @jorgen49: I think the commenter meant that they talk about lowering the section for compliance and then talk about their W-shape adding stiffness. No way Huawei to reconcile that. This shape has it's drawback though and that is, you have to be extra careful when applying tubeless tape and you will need to change it more often.

@werics: Exactly. The qalititative lab test can be performed no problem, the issue is that human has to then recognize the difference, so it is worthless. That is why I mentioned people claiming that their X carbon bar dampens vibrations, and I mean Race Face bars in particular, where opinions go from "amazing" to "roughest crap that I ever rode". If Spank could provide two sets of rims, one with the foam and one without for a blind test in a sample group of at least 20 riders then we could talk. They could use black alloy and brass nipples to compensate for weight difference. If the result comes out at least 70%-30% liking the foam filled rims, we can talk. Until then. No.
  • 1 1
 @werics: try a maxipad for that dampening problem
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 Bullshit in cycling wasn't enough.
  • 1 1
 Just use a baguette
  • 1 3
 So, green foam is just green foam then.
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flag WAKIdesigns (May 22, 2019 at 1:28) (Below Threshold)
 Gets you pumped after watching Green Lantern
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 They get dents really easily
  • 2 4
 They also taco quite easily. Built up a set of these for my friend only to find him doing the walk of shame after two runs. The front folded in a corner. These aren’t the wheels for bashers.
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 @m47h13u: I've had the complete opposite experience with a set of regular Oozy 350s.

I'm a rim smasher and built these up for myself. They've remained nearly true and dent free despite regular abuse on front range trails near Denver as well as a few Moab trips.

I built these up to replace some carbon rims I obliterated.

Maybe your buddy's got a case of JRA. tacoing while turning seems implausible. Tacoing because his front wheel lost traction and turned perpendicular to the bike would occur with nearly any rim.
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 @m47h13u: I put over 50 days dh riding on mine last season with 0 problems other than having to re-tighten spokes. Spank makes great alloy hoops.
  • 4 1
 @jbadger: sounds like you know how to build wheels and @m47h13u does not...
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 I don't get it.
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